/*
 	Copyright 2007 Amazon Technologies, Inc.  Licensed under the Apache License, Version 2.0 (the "License"); 
	you may not use this file except in compliance with the License. You may obtain a copy of the License at:

	http://aws.amazon.com/apache2.0

	This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
	See the License for the specific language governing permissions and limitations under the License.  
 */

package com.inspectortime.webapp.util.fps;
import java.io.IOException;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;

import org.apache.ws.security.WSPasswordCallback;

/**
 * A simple password callback handler for handling WS-Security UsernameToken authentication. When handle() gets 
 * called a default password is returned.
 * 
 * @author FPS SDK Team
 *
 */
public class PWCallback implements CallbackHandler {

    /* (non-Javadoc)
     * @see javax.security.auth.callback.CallbackHandler#handle(javax.security.auth.callback.Callback[])
     */
    public void handle(Callback[] callbacks)
        throws IOException, UnsupportedCallbackException {
        for (int i = 0; i < callbacks.length; i++) {
            if (callbacks[i] instanceof WSPasswordCallback) {
                WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
                /*
                 * here call a function/method to lookup the password for
                 * the given identifier (e.g. a user name or keystore alias)
                 * e.g.: pc.setPassword(passStore.getPassword(pc.getIdentfifier))
                 * for Testing we supply a fixed name here.
                 */
                pc.setPassword("afpsfoo");
            } else {
                throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
            }
        }
    }
}
